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Auxiliary sciences of history
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Telegraph
Telegraph
Topic
sh85133315
·
id.loc.gov
Used for
Electric telegraph
Postal telegraph
Telegrams
Broader Terms (3)
Ciphers
Communication and traffic
Telecommunication
Hierarchy
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Narrower Terms (7)
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Cables, Submarine
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Cipher and telegraph codes
Military telegraph
Optical telegraph
Radioteletype
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Telegraph, Wireless
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Weather telegraphy